Operator's Manual

Table Of Contents
Device Description
24
BIS™ Advance Monitor
patient's level of hypnosis. The device is for use by medical personnel only. The
monitor and the BISx unit are designed for use for multiple patients, multiple uses.
The BISAdvance monitor display consists of:
The current BISnumber
Raw EEG waveforms in real time
Various signal quality indicators (EMG, SQI)
Trend graphs of processed EEG variables
Processed EEG variables, including suppression ratio (SR), suppression time
(ST), and burst count (the latter available when a 4-channel BIS™ system
and a BIS™ bilateral sensor or an Extended sensor are in use)
Alarm Indicators and Messages
The system shall perform computations on the acquired EEG signals in order to
produce the following processed variables in addition to the BIS™ number:
Electromyography (EMG)
Signal Quality Index (SQI)
Suppression Ratio (SR)
Burst Count - for Extend Sensor and four-channel monitoring only (BURST)
Suppression Time (ST)
Spectral Edge Frequency (SEF)
Median Frequency (MF)
EEG Power Asymmetry Index (ASYM) (for four-channel monitoring only)
The BIS™ Advance monitor can work with a BISx module, which records and displays
two channels of patient EEG information, or with a BISx4 module, which records and
displays four channels of EEG, two from each side of the brain. For more information
about the four-channel system, listing the unique aspects of four-channel
monitoring, reference 3.8 Four-Channel Monitoring on page 92.